Stock #2025996108 is of really poor quality

I downloaded this image: Teal abstract wavy background design element with energy flow, graphic design Stock Vector | Adobe Stock and thought it was going to be a simple process to remove the words. It wasn’t, because it looks like the creator used image trace (paths that are not drawn correctly, etc.) on an existing asset, so the words are part of the actual vector graphic. 

Why do we get charged crazy amounts of money for a subscription service, when we get stock images that are really poor in quality?